Interurban Electric Railway
Reporting mark: IER
IER - Oakland Estuary Bridge (Alameda County, California)
Coverted from railroad-only to road vehicle usage in 1951. Replaced by a new bridge in 1974.Lost Through truss bridge over Oakland Estuary on Interurban Electric RailwayReplaced by a new bridge
San Francisco-Oakland Bay Bridge (San Francisco County, California)
Built 1936; Key System tracks removed 1958; rehabilitated 1962; partial collapse 1989; west span seismic retrofit 2013; east span replaced 2013.Suspension bridge over San Francisco Bay on I-80 connecting San Francisco, Yerba Buena Island, and Oakland. New eastern span is a 1400 foot single anchored suspension bridgeOpen to traffic
Solano Avenue Tunnel (Alameda County, California)
Built 1930Tunnel under under Marin Avenue on Solano AvenueOpen to traffic